Kilotest: Diagnoses of attribute value invalid violation by HTML element 580 on Sightline Institute page

Basics

About the Sightline Institute page

• URL: https://www.sightline.org/
• Tested 29 days ago by job wxv on 2026-05-03 at 17:04

About HTML element 580

• Tag name: svg
• Text: [not applicable]
• Start tag: <svg xmlns="https://www.w3.org/2000/svg" fill="none" viewBox="0 0 22 21" height="21" width="22">
• XPath: [not obtained]
• Bounding box: x = 0, y = 0, width = 0, height = 0

About the attribute value invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute value invalid issue for HTML element 580 of the Sightline Institute page.

1. Bad value https://www.w3.org/2000/svg for the attribute xmlns (only http://www.w3.org/2000/svg permitted here).

   Tool: Html Checker API (World Wide Web Consortium)